The sexual act of covering the cleavage of a large breasted woman, preferably a hooker, with cocaine and titty-fucking her until high.
Tom: Man, I had the best time in Kansas City last weekend. Totally went Colombian Bobsledding on this waitress at a truck stop. Hit it so hard between those big, sweaty jugs the coke turned into paste.
Steve: That is disgusting. Kansas City? Seriously? That place is the worst.
The act of knocking your partner unconscious during intercourse, then you proceed to ride then off the roof of your house into a pool.
Jim: Hey babe, you ready for the Extreme Alaskan Bobsledding?
Jane: Sure, but try to take it easy, I don't want to tear my back up that much this time.
Jim: Well you don't have a choice, because your going to be unconscious
Jane: Fuck